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/*
* Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_DELETE_SELECTION_COMMAND_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_DELETE_SELECTION_COMMAND_H_
#include "third_party/blink/renderer/core/editing/commands/composite_edit_command.h"
#include "third_party/blink/renderer/core/editing/commands/delete_selection_options.h"
#include "third_party/blink/renderer/core/editing/visible_selection.h"
namespace blink {
class EditingStyle;
class HTMLTableRowElement;
class CORE_EXPORT DeleteSelectionCommand final : public CompositeEditCommand {
public:
static DeleteSelectionCommand* Create(
Document& document,
const DeleteSelectionOptions& options,
InputEvent::InputType input_type = InputEvent::InputType::kNone,
const Position& reference_move_position = Position()) {
return MakeGarbageCollected<DeleteSelectionCommand>(
document, options, input_type, reference_move_position);
}
static DeleteSelectionCommand* Create(
const VisibleSelection& selection,
const DeleteSelectionOptions& options,
InputEvent::InputType input_type = InputEvent::InputType::kNone) {
return MakeGarbageCollected<DeleteSelectionCommand>(selection, options,
input_type);
}
DeleteSelectionCommand(Document&,
const DeleteSelectionOptions&,
InputEvent::InputType,
const Position& reference_move_position);
DeleteSelectionCommand(const VisibleSelection&,
const DeleteSelectionOptions&,
InputEvent::InputType);
void Trace(blink::Visitor*) override;
private:
void DoApply(EditingState*) override;
InputEvent::InputType GetInputType() const override;
bool PreservesTypingStyle() const override;
void InitializeStartEnd(Position&, Position&);
void SetStartingSelectionOnSmartDelete(const Position&, const Position&);
void InitializePositionData(EditingState*);
void SaveTypingStyleState();
bool HandleSpecialCaseBRDelete(EditingState*);
void HandleGeneralDelete(EditingState*);
void FixupWhitespace();
void MergeParagraphs(EditingState*);
void RemovePreviouslySelectedEmptyTableRows(EditingState*);
void CalculateTypingStyleAfterDelete();
void ClearTransientState();
void MakeStylingElementsDirectChildrenOfEditableRootToPreventStyleLoss(
EditingState*);
void RemoveNode(Node*,
EditingState*,
ShouldAssumeContentIsAlwaysEditable =
kDoNotAssumeContentIsAlwaysEditable) override;
void DeleteTextFromNode(Text*, unsigned, unsigned) override;
void RemoveRedundantBlocks(EditingState*);
const DeleteSelectionOptions options_;
const bool has_selection_to_delete_;
bool merge_blocks_after_delete_;
bool need_placeholder_ = false;
bool prune_start_block_if_necessary_ = false;
bool starts_at_empty_line_ = false;
const InputEvent::InputType input_type_;
// This data is transient and should be cleared at the end of the doApply
// function.
VisibleSelection selection_to_delete_;
Position upstream_start_;
Position downstream_start_;
Position upstream_end_;
Position downstream_end_;
Position ending_position_;
Position leading_whitespace_;
Position trailing_whitespace_;
Position reference_move_position_;
Member<Node> start_block_;
Member<Node> end_block_;
Member<EditingStyle> typing_style_;
Member<EditingStyle> delete_into_blockquote_style_;
Member<Element> start_root_;
Member<Element> end_root_;
Member<HTMLTableRowElement> start_table_row_;
Member<HTMLTableRowElement> end_table_row_;
Member<Node> temporary_placeholder_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_DELETE_SELECTION_COMMAND_H_
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